摘要
热处理木材在户外应用过程中受光辐射易发生变色现象,影响美观。深入研究热处理木材的光变色机理及防治方法,对其靶向改性及服役时间延长具有重要作用。本文归纳光辐射后热处理木材的颜色变化规律,总结化学组分在光辐射过程中的降解反应。从反射作用、紫外线吸收、自由基吸收/破坏三个方面综述光变色的防治方法,分析亟待解决的问题,以增强热处理木材的颜色稳定性,促进其可持续利用。
Due to the effects of oxygen,water,light,and other environmental factors,the thermally modified wood is prone to photo discoloration.The photo discoloration significantly affects the appearance of thermally modified wood.Studies on the mechanism of photo discoloration and the prevention methods play an important role in the targeted modification and the extension of the service life.In this paper,the color changes of thermally modified wood during the aging process were summarized,as well as the degradation reactions of chemical components.In addition,the prevention methods of photo discoloration were reviewed from three aspects:reflection,ultraviolet absorption,and free radical absorption/destruction.Finally,prominent problems were analyzed and suggestions were proposed to provide reference for improving the sustainable application of thermally modified wood.
作者
陈凯文
彭辉
蒋佳荔
吕建雄
詹天翼
CHEN Kai-wen;PENG Hui;JIANG Jia-li;LYU Jian-xiong;ZHAN Tian-yi(College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091,China)
出处
《木材科学与技术》
北大核心
2022年第2期11-17,共7页
Chinese Journal of Wood Science and Technology
基金
国家自然科学基金项目“热处理木材细胞聚集态结构与水分关系及其空间演变机制”(31971591)。
关键词
热处理木材
光变色
材色
降解机理
防治方法
thermally modified wood
photo discoloration
wood color
degradation mechanism
prevention methods
